1577554055489 has 2 divisors, whose sum is σ = 1577554055490. Its totient is φ = 1577554055488.

The previous prime is 1577554055431. The next prime is 1577554055543. The reversal of 1577554055489 is 9845504557751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1537371848464 + 40182207025 = 1239908^2 + 200455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1577554055489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1577554057489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 788777027744 + 788777027745.

It is an arithmetic number, because the mean of its divisors is an integer number (788777027745).

Almost surely, 2^{1577554055489} is an apocalyptic number.

It is an amenable number.

1577554055489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1577554055489 is an equidigital number, since it uses as much as digits as its factorization.

1577554055489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176400000, while the sum is 65.

The spelling of 1577554055489 in words is "one trillion, five hundred seventy-seven billion, five hundred fifty-four million, fifty-five thousand, four hundred eighty-nine".